Cited by 43Stress Responses and CortisolTreatment of Major DepressionNeuroscience and Neuropharmacology Research

Short-term administration of fluoxetine and venlafaxine decreases corticosteroid receptor mRNA expression in the rat hippocampus

Yau, Joyce L.W, Noble, June, Hibberd, Carina, Seckl, Jonathan R·2001·Neuroscience Letters

Abstract

Chronic treatment with antidepressant drugs (2 weeks or longer) increases corticosteroid receptor mRNA expression in the hippocampus and reduces hypothalamic-pituitary-adrenal axis activity in parallel with improving mood and neuroendocrine function. Earlier effects are less well documented. We examined the effects of short term (9 days) treatment with fluoxetine (10 mg/kg) and venlafaxine (10 mg/kg) on hippocampal mineralocorticoid receptor (MR) and glucocorticoid receptor (GR) mRNA expression and spatial memory in adult rats. In situ hybridization histochemistry showed that the antidepressants decreased MR mRNA expression in all hippocampal subregions (e.g. 45% decrease in CA1 with venlafaxine, P<0.001), while GR mRNA expression was selectively reduced in the CA3 subregion. There was a trend for decreased plasma corticosterone levels following fluoxetine (50% fall, P=0.07) and venlafaxine (30% fall, P=0.18) but neither antidepressants affected spatial memory in the watermaze. Thus antidepressants can have complex and opposing actions on hippocampal corticosteroid receptor expression depending on the duration of treatment.

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Crossref · 10.1016/s0304-3940(01)01890-0

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Authors
Yau, J. L. W., Noble, J., Hibberd, C., & Seckl, J. R.
Affiliations
Western General Hospital (GB)
Corresponding author
Yau, Joyce L.W
Venue
Neuroscience Letters
Publisher
Elsevier BV
Published
2001-06
Volume
306
Issue
3
Pages
161-164
ISSN
0304-3940 (ISSN-L)
OpenAlex
W2027775989
Cited by
43
References
19
Citations by year
2021: 2 · 2020: 1 · 2019: 1 · 2018: 1 · 2015: 1 · 2014: 3 · 2013: 1 · 2012: 3
FWCI
1.22
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience Letters (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
fluoxetine, venlafaxine, antidepressants, mineralocorticoid receptor, glucocorticoid receptor, hippocampus, spatial memory, corticosterone, hypothalamic-pituitary-adrenal axis, hippocampal subfields
MeSH terms
Venlafaxine Hydrochloride, Animals, Corticosterone, Cyclohexanols, Fluoxetine, Hippocampus, Male, Memory, Rats, Inbred Strains, Receptors, Glucocorticoid, RNA, Messenger, Gene Expression, Receptors, Mineralocorticoid, Antidepressive Agents, Second-Generation, Maze Learning, Rats

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